I bought a 94 gr8 about 4 years ago and I'm ready to do some work to it. It has some aftermarket parts installed already. My question is how can I figure out what size injectors it has? It has a trick flow plenum. (I guess that's what it's called. Big thing on top of engine). I'm assuming it has a 75mm throttle body. And how can I tell the gearing in the rear? Guy said it had gears but didn't tell me anything else. This was 4 years ago also. And is there a way to tell how much it has been lowered? It has strange shocks in the rear. Not sure about up front. Thank you