when i was looking for my rb20det i was offered a rolling gts4 shell and engine (which you've got to admit is very tempting) so off to the engineer i when to ask the question, what is needed to get this into that, he looked at me and said anything is possible for the right kind of money, he was standing there and i could see the dollar signs in the back of his eyes rolling up and up, he was talking close to the $13 to $14,000 dollar mark to drive it away.