need help on which hks bov to order

[Munnugles]

so im looking at the one on SU made by CPE and its $270 and it recirc and all... but theres also one on mazda3online thats $260 and it says hks version 2 combo pack... is there any difference in fitment and quality or modifications need to be made to make it fit... basically which on is better... i want to order tonight.. so help would be greatly appriciated...
thanks in advance...