I would tune what you have first before spending more $$$.
Your 60' is off by 1.5 tenths. You should be able to run a 1.65-1.67
I would start with ignition curve first and then dial in carb second. My 300hp magnum with home ported heads, [email protected] .495 lift ran a best of 11.86. Same gear, tire, etc as your car.
This is what I've found that works on a low 12 high 11 second pump gas SBM in the [email protected] cam range street/strip setup for ignition and 750dp carb.
Ignition: 29*-30* initial @ 1000 rpm in neutral. 4* mechanical advance all in at launch rpm. I launch my car at 2100 and my TA 10" s800 tight converter flashes to 3200 instantly. High initial timing helps off idle transition and throttle response. Vacuum advance is ported and starts to move at 6", max 50* mechanical and vacuum combined. Many will say this is to much timing but it works. You need to be conservative with vacuum advance coming in until you know the fuel curve is good. I use ported vacuum with my 750 proform. I also use ported so it does not affect my launch rpm timing.
Carb: 750 Proform DP, This is the setup I changed from stock. Carb was lean off idle and lean at WOT upper rpm.
Center the main body throttle bore to base plate alignment. Also set transition slot up front and close the secondary as much as possible without touching.
Specs I run and should work for you:
Airgap with center divider upper edge rounded, 1/4" holley open fiber gasket, 1" HVH 4 hole Super Sucker, PCV connected to rear inlet.
IFR .035 moved to bottom
IAB .070
All 4 idle screws 1 turn.
71/85 main jet
MAB .026
Primary PV 9.5, PVCR .059, Rear PV plugged.
4 hole emulsion metering block .028, plug, .028, plug top to bottom.
Pump shot primary Green cam #2 hole .033
Pump shot rear Orange cam #1 hole .031
Suspension:
Mancini Racing SS spring knockoff, Adjustable snubber set 1/4" from floor at the track, 90-10 front, 50-50 rear, 26" 235/60/15 MT ET Street drag radial 20 psi cold. Launch 2100, shift 6200, trap @ 112mph 6300rpm.
Hope this info helps you out. Make one change at a time and if it works keep it, if not go back.