Would track heat upper be restricting on some stage 2 canfields? Im thinking of getting the TFS R but im not going to be seeing 7k rpms and wouldnt be getting the most out of that intake.
the trickflow r series intake works from 2500- 7250 and would work great with those heads it just means it will make good power up to 7250 ! the track heat would choke you down ! my buddies just removed a track heat and installed a saleen intake and he just has stock bottom end, box stock twisted wedge heads and f cam. plus the r-series looks awsome....
the holley systemax is a great intake i have a 302 with edelbrock heads and a tfs 1 cam with 1.7 rrs and i love it i have a friend who just buil a 408 and has a systemax intake for sale,it has been ported by foxlake he has all paper work from the work he had done if your intersted pm me.