If you are using Trick Flow heads, they have a thicker deck, so generally a longer pushrod is needed. Like you said, you should measure it to be sure.
2004 torrid red with red interior A4 GTO (1 of 499)
TR-230/236 cam/TEA ported Trick Flow 215 heads/4" CAI/100mm MAF/ported FAST 90/Kooks/Magnaflow
Performabuilt trans/3200 stall/Truetrac/Gforce1320 half shafts, stubs, CF driveshaft/SSR wheels/SNL tune