Hi Tom
It would be a very easy conversion.And you would have a ton of room to add a turbo for extra power.Lots of room for a big rad ect.
The mechanical version of the 6.2/6.5 would use all your old wiring,which you could apgrade for longevity with a few solinoids ect.
Thomas
90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews