Sabre75

Hi, I have just dropped a WRX motor into My 91 legacy, I have done the Wiring loom transplant on the intake manifold ( my old loom on the new manifold), Is there anything elst that I should do ie Fuel pump Change the computer over. The Car is running really well but only boosts to 8lb as I am still running the Legacy computer, Also should I get the Legacy computer Fuel zones remapped?

Hi Guys and Girls, Just new to this site, I was wondering if it is possible to fit a Ver 4 WRX motor to a 1991 Facelift Legacy RS as the block is still an EJ20T, Will I need to change the Diff and gearbox as well ?????, I have blowen the Compression rings and can get the new motor really cheap but want to know if all the extra work will cost to much Thanks Sabre 75