I would possibly look at the APR route matey, did they get you a price on fitted? Yes ok so the JBS04 conversion does sound good, but i know someone who has still had problems with his, cracking manifolds ect, and his clutch slips quite alot aswell from what i remember. Also on some rollers he doesnt make the figures that JBS have claimed. Have a word with him before you take the plunge, and just see if he would take the plunge again given the chance. Think his name is Bezzaboy