[two89w]

i have a 347 windsor currently running 44mm idf webers which are too small,should i use 48 or 52 mm webers,engine specs are,10.2comp,solid flat cam 560lift 294adv 248 @ .050 110lobe sep,windsor snr alloy heads inlet/309cfm @ 0.700lift exh 209.2cfm @ 0.700lift,1 3/4 4 into 1 headers