418 Stroker options....

Well I am sure most of this has been answered but usually for different goals so I was hoping for advice for my specific goals, and since you guys are the best here we go:

I have a 68 340 block at the machine shop right now, it is already 30 over atm but has some pitting in 2 cylinders. We are hoping that going 40 over will clean it up, if not then I have 3 options that I would need advice with, either I can sleeve the 2 cylinders and then have a 40 over block or sonic test and go to 60 over, or sell the block and get a different block either a 360 or 400.

the main reason for going 418 stroker is that the block didn't come with anything, just the block the caps, windage tray and the oil pan.

Now I am debating on a blower motor or NA

The car is a 73 duster 340 HI-PO 4 speed Car. I don't know what kind of power the drive train can take but I'm sure I will be upgrading it in the years to come. I want to make a street strip car. I would like to get over the 500HP mark and it would be great to beat my neighbors 700HP blown 350 in his tubbed 32 coupe lol

The one thing I am thinking about is planning for the future, if I do continue with street strip it would be nice to have something I could keep getting more power with like a blower motor and I could just increase ring gap change a pulley and put water meth on it.

as for a budget I am comfortable for 5K-8K for the motor. so please feel free to chime in as I am young (26) and haven't learnt from my mistakes like most of you have done already :)

I am having a hard time finding a stroker kit with low enough compression for a blower. Can I get a 177 blower kit for a 340? where do you guys source this kind of stuff? summitracing.com seems to be kind of lacking in mopar stuff