Guys, I have somewhat good news. due to recent investigations of R40M and R42, the project has two different possibilities.
1) if we continue to use DJ Hammers R38 seats and add the buldge, it could develop into The R40M, however, this would mean to get a different interior roof
2) we use mudwrestles seats and his interior Roof and continue to develop R42
heres the progress of it so far
http://errormacro11.imgur.com/all/