That's a big wish list there Dray, So when do you think you'll get this all done? It'll be a Monster if ever finished.
Get a 3 core big-block radiator. The current one won't have the outlets on the right sides. The Power steering and alt brackets are all different. Might have to get them from Marsh Perf. or ebay. Fuel pump: Use one from an 89-93 Ford E-150 or F150, Nice big external pump. Modify your original sending unit plate to add a 3/8 supply line and use the existing pickup as a return line. OR add the return line to dump into the filler neck. (easiest to do, pull the filler, weld in a fitting, slide it back in.) That Hemi will blow alot more than that Grand Am away.
From my favorite fuel injection site:
"The external pumps used in Ford F150 fuel injected trucks from the 89-93 model years are Delco EP286. At 12 volts, the operating pressure is 70-95 PSI with 36-40 gals per hour. The biggest Delco pump is the EP424, which is 75-90 PSI at 40 gals per hour. EP 268 is a GM# 25117086, EP 424 is a GM# 25176156."
Here is a picture of the Econoline pump:
