87 GN from Hernando signing in. New to area originally from Illinois. My GN has a Kenne Bell ram air kit, Kenne Bell 70mm throttle body and intake plenum, 30psi injectors, Magnecor 10mm spark plug wires, Champion copper plugs, ANS knock sensor, ANS wastegate solenoid, heavy duty intercooler hose set, Eclipse cd player and speakers, Kenwood amplifier, upgraded fuel pump (can't remember brand), Bosch adjustable fuel pressure regulater, new upgrade coil pack, and Casper 7 position chip. The rest is stock and never opened the valve covers or touched the trans except for fluid and filter change. If anyone knows of a good transmission shop anywhere between here and about Ocala it would be greatly appreciated because I am having a problem with it slipping between 3rd and 4th gear.