Re: Lsc Mkvii
In my opinion, your best bet is to get another Lincoln 8.8" 3.27 L (locking) rear end. The Lincoln rear ends are strong, feature disc brakes, has 5 lug axles and come with a better gear ratio than the 2.73 or 3.08 in the Mustang 8.8" rear ends of the same era.
I don't know what you mean by "major HP" but the 8.8" is pretty robust and will fair well with 350 to 400HP. I guess if you are building a 500+HP race car, by all means build a heavy duty rear end, 31 spline axles etc.
If you want to try the Mustang rear end there are some considerations. Your Lincoln has 4 wheel disc brakes with ABS. Your LSC rear end is reported to be about 1 1/2" wider than the Mustang rear end.
I have two 1988 Mark VIIs and they are pretty quick for their weight. A good breathing 5.0 HO will produce considerably more horsies. As far as I know, none of the Mark VIIs had MAF engines. They used the pre-MAF 'speed density' system. There are still lots of aftermarket performance parts to make your 5.0 HO go fast and sound great in the process.
Welcome to Ford Farm! 1998 Escort ZX2, 1988 Lincoln Mark VII Bill Blass, 1992 Mustang LX 5.0, 1996 Contour, 1998 Mark VII LSC, 2000 Mercury Cougar...still looking for a truck!