Im trying very hard to acquire a 4bt. but i need alittle help with the transmition setup before i get the motor. looking to go nv4500 5 speed. the 4bts usually have the th400 from the p30s?, so what would need to be done to bolt up a NV4500 from a 89 Chevy. thats all i know about the trans right now, this guy i know is trying to sell it to me, but i want to make sure its useful first. so what do you think?