Super Sniper "carb" Spacers, Your choice would be???

I have a super sniper fed 512rb. Currently it has a 1 inch open spacer into a trickflow single plane intake. I want to add a merge spacer from Wilson. I know that there is no magic formula that would work on all cases. That being said, if you were going to buy just one merge spacer for my setup, would you buy a 1 inch, 1.5 inch or 2 inch spacer. I have a large hood scoop so clearance is not an issue?.wsn-004130_nb_xl.jpg
RB 512ci, 440 source stroker kit with lightweight crankshaft, forged pistons, 10.83 CR. Trick Flow 240 heads, 440 source aluminum rockers 1.5RR, Trick flow single-plane intake. Holley Super Sniper EFI, HyperSpark ignition, coil and distributor. TTI 2 inch headers. Hughes 3000 stall converter. 727 transmission with transgo TF2 valve body mods. B&M Quicksilver shifter. Gear vendors overdrive to 8 3/4 rear end with 3.91 gears, braced in back. SS leaf springs. Competition Engineering race shocks. Pypes Exhaust 3" into 2.5 inch. RacePro mufflers. Cooper Cobra 275/60-15 28.2 inch diameter tires, will have drag radials for track. Current cam specs 244°/252° @ .050”, 282°/290° adv, .516”/.537” lift (1.5:1 rocker), 112° LSA, .016”/.018” lash, Solid lifter from Oregon Cams.