Really depends on what you want from your combo. Te Comnp Extreme Energy cams have some nice off the shelf grinds that will really wake up that combo, or you could go to Anderson or FTI for more of a custom grind. My AFM really woke up my combo anfd it was money very well spent, I would go to atleast a 24#injectors and a 75MM if you want a Pro-M or thr 76mm C&L which I have had great results with.
I would suggest going with a bigger cam and getting 1.6 rockers as the 1.7's add a lot of stress and they change the geometry of the valve train a little.
To make power to 6000rpm you'll need a cam with around 228 duration @ .050
My AFM N-61 makes power till around 6300 on my car, will make more as soon as the heads get ported and I get it more needed fuel it's .544/.568 228/236 110.
If you don't want to fly cut the pisions the AFM N-4 will work good and it has got guys running in the 11's.
I would go ahead and get a 70mm TB as I swapped my 65mm for a 75mm and saw no loss in low end just a slight gain in the high RPm and it isn't port matched to my intake yet so I expect a gain after I do that.
------------------
Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension, SPEC stage III clutch, Lakewood SFI bell, S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!
[b]12.16 @ 113.5, 1.78 60ft..no traction in the 90 degree