I've got an XR3i cabby that I've almost completely reshelled my old RS Turbo into.*
It has complete RS Turbo running gear inc front and rear anti-roll bars, Koni adjustables, AVO -35mm springs and polybushes all round so I don't really notice any body roll. With the MFi '3i engine in there it was a pleasure to drive and was easily thrown into corners.*
I'm 75% complete on the EFi turbo conversion now. I've set myself the deadline of June 1st to get it finished. I'll let you know how it goes wih that engine in it.
Here she is:
I'd say if you don't mind the cabby then reshell into that. It won't fetch as much in the long run but it will keep you entertained. Imagine being able to hear even more of those lovely turbo sounds as you won't have a roof in the way!!
Lee