Jay (buddyparts) managed to get his engine in without cutting out his firewall, but he did have to make a new tunnel (due to running the 6 speed) and he was also putting it into a ke which is a little taller in the engine bay i reckon. I think it is possible to get them to fit, i've had a look at pics of beau yates's car and he managed to do it, but that doesn't have an engine cover, and last time i had a look at it in person it had the crossmember spaced down. i didn't know that there was a difference in W gearboxes on the outside? i thought it was just ratios that changed