Super charging my 67' 273 commando valiant

Heeeeeyy yoooou guuuuys!!!....

Ive literally been losing sleep over what I was going to do with my 67 valiant with an original 273 commando....whether i was gonna drop a 360 and be happy, or build and force my lil 273....ive done did decided, (my grammar gone done her shoppin). Ima keep the lil'un and build it up to take the boost.

The story starts as this...i bought the little gem for a song, it was a sad leaky lil guy, that was breathing like an asthmatic jogger, burning oil and fowling plugs, navigating the roads as an aircraft carrier would, and stopping with the power of 1 brake...coolant and oil dripping from every little spot in the engine, blown seals and diaphragms in the carb.

I spent a Saturday and replaced all the oil gaskets, timing cover, hoses, even had a specialty gasket shop make a set of gylock gaskets for the oil filter mount...bought an edelbrock and slapped it on, replaced the gas tank....turned into a peppy lil guy....the little bastard still burns oil in number 1&3, just gotta replace them valve seals. It was at this juncture i was gonna sell the happy lil smoker....(whom only smokes at high rpm)...

then I got into two motorcycle accidents. One netted me a nice little settlement...so came the question to the little lady...sell or supe? She said she wanted to keep it...so....I redid the entire brake system, replaced the worn gearbox and steering bushings....

i came to find out i am going to have a very sizeable settlement from the first motorcycle accident which is going to require me to have neck surgery and permanent nerve damage down my left arm....

I want this lil guy to be my little sleeper, i want to keep the original motor, and at this juncture....money is no object...im going to have the 273 rebuilt for boost, and have have the heads refurbished, new piston rings with larger gaps, (for expansion) and i want to keep the stock 10.5:1 compression ratio, and I want forged rods. Ive already sought out the demon 650cfm blow through, and have done due diligence on researching the kind of supercharger i want....paxton 1201850p. I have a nice little set of hookers im just gonna dump right under the driver door (to be installed when the engine is out) but this is as far as i know.

I come to this forum with humility, asking for what else I need for my lil 4 door commando. As far as required engine work, knowledge on how much boost i can and should run...(im sure itll spend a few hours on the dyno to get it right, ) and other required supporting mods i havent considered, I'm at a loss. I have searched the all knowing Google and you tubes....and can't find anything for my particular dilemma. The other guy I saw here blowing a 273 went top mount. I cant fit that under my hood. I wanna keep original body work.

Any and most advice, comments, and help is much appreciated. The continuation of this project should begin in February or march. Thank you for any time you take to give advice. I'd like to add im looking to get around a respectable 400 ponies

----this guy---