They're Ultra Rims "Thunder". Yeah, I like them too, thanks. Yeah, 318's do rock. When I do up the engine, I'll keep you all posted.

 

I'll second that, no problems, even with the towing abuse i give it

 

400 horse power is actually pretty hard to do. I have a lot of money into my 360 and 400 horsepower is questionable.

 

what do you have done ??

 

It depends on how you plan on doing it. 400 horsepower is really hard to build through programmers and bolt-ons, but easy enough if you crack the block open and stuff goodies inside it. I think a 318 makes 240 hp, and a 360 makes around 260 hp. If you add a longer stroke crank, bigger pistons, aggressive cam, headers, intake, head work, and a custom program, I figure an easy 400 hp, probably more!