What goodies do I need to build a Fast slant 6

So there you go, and for your first post as well.
Welcome to the Forum, I hope you stay with us.
You need to explain what car you have and what you want to do with it.
The are some here who don't like a slant, so you are going to get the V8 answers.
But 300 from a slant is not going to be easy or cheap.

Hi Hyper
Thanks for the information, I wasn’t sure if people on this forum just want people to get straight to the point but yes I should’ve given a bit more info to get a better reply.
I know this is a bit last know but I’ve got an ap6 I basically just wanted an old school car that I could still afford and have a hot engine that really cranked out some fun power!, I’m 50yo and never had something cranky so to say and yes I could’ve got a V8 and something newer that would certainly have more power but I really wanted an old school car.
I’d seen some 245 and 265 engine’s really crack hard without spending a fortune so for 6k and thought that the 225 might be similar but I’ve obviously been mistaken lol, so perhaps I might have to look at the turbo side of things but guessing that won’t be very cheap either.
Anyway thanks for your time and help it’s greatly appreciated.
Cheers