For me, simple. U get my package, i free wedding plan for you. LOL....
Power. To get BT to equal SC power, you're spending min 2x money on it. If fuel is not your primary concern, then SC is the way to go. Everything in SC is robust. BT famous for weak GB. If you say you're happy with my ex TC setup, then its SC. I ran once with my ex mech at PG, we're on par. His setup was only with high cam and that run with me, he is fetching 1 more passenger with no launching.
find me one BT can hit 0-100kmh at less thn 7 sec with normal mod (no touch engine). That explain why i dont favour it
In fact, after thinking yesterday (slept at 1am), im looking to throw everything in at very good price. Car 1.8l + gze + Tein SS + Cusco braces + Falken RT tires + OZ rim (5 biji) all go at no more then 2xk. U can recoup abit by selling the twinpot, stock 1.8 engine (if you dont wan to build 1.8l SC), BT gb for another rm1.3k at least. Lelong sales