!986 Rx-7 non turbo
 

What are some sweet mods i could run for this car that are not that expensive?

Well cheap and mod should not go together but you can gut your two pre-cats and ad a K&N cone filter with an AFM adapter for like a ~10HP increase in power. Cost about 60 dollars.

Santiago

PS-if you want a REAL mod read my signiature quote. ;)