pa ot.. so what is the basic recipe of 62mm block? hehe
once we upgrade our block we also upgrade:
1. CARB
2. CAMS
3. RCDI
4. VALVE SPRING
5. CLUTCH SPRING
6. change sprocket combination
7. VALVES - depending on the size of the block... some bore up like vixion kit dont need to change to bigger valves
8. Quick Throttle (optional)
also we have to consider the style, skills and techniques of our different trusted mechanic...
every mechanic have different style on how they will match your load and how are they going to put all together the parts...
BTT:
TS if your refering to same size of block both 57mm i will go for vixion block
but if your a little bit short of budget and ur a little bit excited to upgrade go for JVT
but if your considering the size of the block go for JVT 59mm instead, almost same as the price of vixion 57mm