/6 198 rods needed badly

If I just got new old pistons, that wouldn't achieve my goal, being less friction, faster boost build, modern pistons with the boost dish. If I use the 198 rods then I would use the dodge neon piston. I have a budget of about 500$ at the moment. And a 360?! Come on dude the point is that I want MPG with performance that's like oh yeah you have a nova so put a 454 in it, should be fast!