87 turbo A/T return to stock performance, help?

[Mk3forme]

It's in good condition, it pulls hard, steering is tight, not a spot of rust.

The only thing I saw was a oil leak at the bottom of the motor, small as it is I'll be getting it looked after.

I won't be doing any of the work myself, my fathers friend owns a nice shop and will be doing the work for me. I just bought this car yesterday, he doing a full inspection and compression test today. So I'll post any findings this afternoon.