intended to buy manifold and throttle for my h23a all motor n 88mm bore 12: compression.
i ve heard good views about skunk2 but ve not much knowledge about the stuff :

1: Like do i really need to change manifold or stay with stock?
2. which brand sud i go with or there is any other alternative part like f series which are interchangeable if worth ?
3. i heard the bigger the throttle more it will b good for n/a . so which size sud i choose for better result (70.72.,74mm) ?
4. i have no knowledge about the manifold and throttle so i would like to know, does the size of the manifold sud b same as throttle example if i buy skunk2 manifold and go with some differ size throttle ?
cuz i heard the skunk2 manifold dont go bigger than 70mm :
5. my friend ve some chinese made skunk2 manifold and throttle . how far d u compare it are they reliable ? or sud i just port the stock manifold w/ a 70mm throttle ?

need a best answer n efficiency