http://dodgeram.org/tech/gas/more_power/V10.htm

has old V10 perf part numbers useful in eBay searches

In the late 1990s ramhack (Christopher J Siano) in Ashland MA bought a kit and ran a supercharged iron V10 Ram with 32 lb/hr fuel injectors that seemed to do quite well

http://web.archive.org/web/20000523104430/http://www.off-road.com/dodge/Features/ramhack.html

In Pompano Beach Florida there is a racing shop that usesstroked Viper V10s in European style endurance racing whose in house crankshaft machining equipment makes long stroke cranks from V10 Chrysler forged blanks.
My memory is fuzzy and a Google search does not bring them up, but i think they go as large as 4.5 inches.