Well, I'm pretty sure that the other three trucks will require different RDT files, as they come with split shot injectors instead of singles.
You can buy blank chips for $200, or $175 for 5+
If you're automotively inclined, you should be able to tune for stage 1's with the manual, some reading and perhaps bill's help.
I may not be 100% correct, but I sure think I am.
