Well
I have had one, the fuel inj, system is a nightmare! Also cylinder head problems plage cracks etc. But there are quite a bit of mods you can do to one..
Just make sure that you look over the car real good maybe take someone with you that has owned one.. that way you can look at shaft play on the turbo, and check for other small things that could end up costing you a bunch of money in the future.
I had a ported head, super60 turbo, act 2600 clutch, 3 inch exhaust and about 15-18 lbs of boost on mine and got a 13.47 at 104 out of mine wich aint that bad. I loved the looks of that car with the handling was awesome, just didnt have enough time to keep up on the maint, of the thing so its up to you.
Later,
Dan
P.S. If you have any furter questions about the conquest just pm me, I would love to talk to you about it!