We put a Drag kit on a 93 GSR with 198k on the all original motor, even had original clutch. Car now has over 201k and is running 8psi daily. We also had a F23 with only 58k and it threw a rod (motor was abused it's entire life, even worse after turbo install). Do a compression check and maybe even run it on the dyno to see what numbers it makes. This will help tell the condition of the motor. Even if you don't rebuild it, you need to do maint. things like oil pump, water pump, timing belt, etc.

Let me know what you are looking for and I can give you a quote on parts or install. Later.