Hi,

Well I have not personally "blown" the old 3.8, but have done so to
other engines.

First of all I would like to stress that if you plan to charge this
engine without  installing custom low compression pistons, boost
should not exceed 3psi. Even so, you will have to retard the static
ignition timing and modify the advance curve or you'll melt the
pistons or worse.

As far as camshafts go the stock ones should work well and not cause
the power delivery to be narrowed to a specific r.p.m. range.

The old connecting rod bolts should be replaced with a more modern
type, and truthfully, stronger lighter rods are recommended.

Jaguar exhaust is a damn good exhaust system, however removing the
first silencers will help reduce restriction.

I recommend JE pistons with the skirts coated with moly, the crowns
and undersides coated with a ceramic heat barrier coating. The
Cylinderhead exhaust ports should also be coated with heat barrier
coatings as well as inside the header pipes. It would also be wise to
coat most of the engine with heat dispersant coatings: Block, head,
valve springs.

It would be a real fun project with good performance, but an expensive
one at that. I love turbo's, but it is not as simple or as clean as a
custom system from - http://www.vortechsuperchargers.com/

Good Luck!

DieInterim