i have a 88 supra, i did the ge to a gte swap and manual trans, i was trying to figure out if you need to reuse the factory oil cooler that came with the non turbo in the new turbo motor? as of right now it runs fine with out it cause i bypassed it but will it have long term affects?

The oil cooler sits right beside the intercooler, it might be the same piece on both cars...

well i have an aftermarket spearco intercooler so the oil cooler sits right in front of my radiator, but do you think i should put the oil lines back to it?

Yes.

yes ;)