Poor Rustlers and Jatos don't have a lot of good short wheelbase drag body options, other than the Pinto and Capri bodies, but I wonder if this one wouldn't work - https://teambluegroove.com/products/vintage-ac-cobra-427-soft-top-body-for-hpi-super-rs4-280mm-super-ten
Probably would require...
I don't have another aluminum case, I search every day though, lol.
If you go big block, you must get the Hot Racing steel gear kit. Otherwise you'll blow those plastic ones up in a heartbeat.
Glad it was of help! Really cool to see more people taking advantage of the 2 speed trans in nitro applications.
Now if only Integy would wake the hell up and start making more of the aluminum cases...my pleas with them have been met with snobbery and ignorance. Meanwhile I know of dozens...