The years are 85-87 in the North American market for 22RTE equipped mini trucks and 4Runners. R151's were only available in truck versions as all turbo 4Runners were autos. The turbo is a CT20, not a CT26. Although, I havent done it personally, a CT26 off a 7MGTE looks like it could be easily adapted to the stock manifold. The CT26 is a much better turbo due to improved oiling and less heat build up. The CT20 has issues with cracking due to excessive heat build up. The 22RTE block is identical to a 22RE with the exception of the added oiling passage for the turbo. The 22RTE pistons are lower compression. Same with the head. EFI is different along with the fuel pump and injectors.