Originally posted by timothale
Must II suspensions need larger brakes and a lot of fab cross members do not have the serrations to hold the upper a arm cross shafts when they ar bolted down and most do not have correct spring seating shape in the upper or lower ends.. I picked up a couple of late 80.s jag sedan front susp including the factory crossmembers for 120 each. I plan to use the stock x member as a locating fixture for bolt hole locations for a arms then build the new tubing x member narrower for my rods the jag has 11 1/2 brakes and forged a arms and with new coil overs will be a lot cheaper than most other kits
When you narrow the crossmember, you will eliminate all semplance of Jag suspension geometry and it will from that point on be timothale suspension geometry. The instantaneous centers will change and with that, everything else.