Old School vs Magnum on 86 Dodge W100

Just helped a friend do the same thing over the span of the past two weeks. 88 W100 318 with 3.21 gears and and 31X10.50-15s It's been converted from 727 to wide ratio NP-435. Installed a 1993 magnum out of a Dakota with 130-135 PSI cranking pressure. Used the front accessories off the LA. It also had a bad camshaft, but we had a good 360 LA roller cam in my '88 block. The stock magnum cam is .432 lift I/E and 240/248 duration I/E. The stock LA 360 roller is .410/.417 with 249/269 degrees duration. When combined with the magnum 1.6:1 rockers, it becomes .438/.445 lift with about 2-3 degrees more .050 duration. (Really would liked to have a set of 1.7:1 rockers on the intakes for .464 lift but valve guide to retainer clearance gets iffy) The two cams intake valve closing is within a half degree of one another (between 60-61 degrees ABDC), so no loss of cranking compression. We added a chinese knock off air gap on it and a 650 Edelbrock carburetor. Exhaust is through a set of '68 model 318 truck manifolds (I would advise using the magnum manifolds or if you have an automatic, better yet headers) and 2-1/4 inch to 2-1/2 inch Y pipe with a single glass pack. Recurved a distributor and it seems to work optimally at 18 degrees static with 35 degrees all in at 2200 degrees. It runs really well for what it is, especially considering the gearing.
All in all, this combination works so good that I can't imagine wanting to mess around with the stock magnum fuel injection and all the headaches of adding it into the older truck. Then there's that "kegger" intake that really needs some internal runner work to make it work properly, and sometimes needs extra work to ensure it seals properly.