Ignition and radiator mounting

[snapon6803]

I have a 1968 C10 with a 327ci, it was T-boned about 2 or 3 years ago and parked. After a couple losses in the family I decided to pull the truck out and get it going to go to the body shop to have the bed fixed but the engine was leaking out of every orifice it could. Pulled the engine resealed it, new water pump, radiator, gaskets, oil pump, and general tune up. I had bought a new 4 core all aluminum radiator but it does not go with the stock mounts due to the tanks being square and not rounded, and i was not sure if the HD radiator mount kit would work to mount the radiator. I was also looking to going with a full electronic HEI ignition from Jegs or MSD but after searching the sites for hours I could not find correct kit to put on the truck, has anyone added an electronic distributor with ignition box. Engine is pretty much bone stock with Rochester Quadjet carb with electric choke also thinking about putting a new carb on as well but not sure what is an upgrade as far as drive ability goes.

I am new to the old school engines and ignition systems, I work mainly on new direct injection engines and Diesel engines so it a bit of a new world for me.

Thank you for any help!