Could an SM-465 be re-geared to different ratios? Something with closer ratio's maybe? I don't ever use the low gear. I want something with a closer ratio setup so my lady can fly. I know a 6000 lb truck is not supposed to be fast, but strange things can happen when you drop stuff in like a 450 hp power plant. [img]images/graemlins/smirk.gif[/img]
Some truck pullers get a custom gear made to replace third, but its expensive and lots of custom machining. As far as other stick options go, you could find an old three speed (yuk) or the NV4500 like willy said. make sure you get a t-case with the 4500 though, sounds like these are somewhat difficult to come by and a pain to match up without custom adapters.
They made a close ratio HD truck tranny back in the day. My friend has one sitting in his shop. Looks like a SM420 I believe but has gearing similar to a rock-crusher M22 [img]images/graemlins/cool.gif[/img]
I believe its called a M28 or something along those lines. Not many people seem to know about them, but I've seen it first hand.