[Rory428]

Although you MAY get lucky, in my experiances, with both Lakewood scattershields, in both FE & SB Fords, and the current McLeod in my 85 302 Mustang "Stocker", each housing needed to be "dialed in". 25 years ago, I just bolted my new Lakewood scattershield onto the 428J in my 70 Mach 1, & stuck the Toploader back in, and never noticed any problems, every time since, when checking for run-out, every scattershield I`ve installed required the use of the eccentric dowel pins. The procedure basically consists of using a small dial indicator, & a magnetic base, attatched to the crank flange, or flywheel. You need to have the tip of the dial indicator against the transmission register hole, & slowly rotate the crank for 1 revolution, while watching the dial indicator. Ideally, you want ZERO run out, but if you are within .005", you should be OK. Otherwise, you will need the Lakewood off set dowel pins, which are available in 3 different offsets. after you get the housing within spec, I always drill a small hole in the block, & into the dowel pin itself, & then tap the block, & install asmall Allen head set screw to ensure the the dowels stay in position. Have fun!