transdapt 1420 is the 90 deg adapter i used but i had to carve away a couple of ounces of BLOCK so it would spin on
transdapt 1020 is the straight down adapter and that on looks like it would go on w/ no modifications but i didn't have the room for it
i used hp tuners to take the theft function out of the computer and yes the factory speedo cluster completly works
