379. Points. 87. Apr 16, 2021. #2. It should be stamped into the floor between the edge of the right-hand seat (passenger seat if LHD) and the door opening, running alongside the seat frame from a point near where the handbrake cable goes through the floor. There would originally have been a flap in the carpet, but as most have been replaced
The chassis number on a Renault 5 GT Turbo should be 17 figures long and begin with the following prefix, which applies to both the Phase 1 and Phase 2 cars: VFIC405050. This starting prefix will be followed by the car’s individual / unique seven digit code. Chassis Number location: The chassis number is located in 2 positions on the R5 GT Turbo.
The main problem with the 500 and 126 engine swap is the gearbox bellhousing, this is because on the 500 engine the starter motor position is more or less on the top of the bell housing where as on the 126 it's lower down on the right hand side (distributor side) What year is your 500 to confirm it's the D model?