I put M.Sport front calipers on my SWB 89 3.0.( THey are exactly the same calipers on gen 2s)
I trimmed my original dust shields, too. I was concerned a blob of grease from the ball joint might get on the rotors and contaminate the pads, because of how much protection I removed. I went back and got the dust shields off the M.Sport and put them on last week.

The shield bolt holes lined up with the knuckle, except the top one that bolts to the caliper is off about 3/16".
I installed new Gen 1 brake hoses and they work fine. I didn't have to bend and metal breaklines, I just kept the metal lines and brakets on that came with the M.Sport's Calipers.
On the new shields I had to trim off a pie shaped piece about an inch long on the bottom of the shield, cutting along a crimp from the edge all the way to the edge of the crimped circle center area .
The bottom of the new shield overlaped the bottom part of the caliper.
I got the brake parts off a 98 2wd M.Sport. Same brakes ,,,easier to work on/ remove...

dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.