Sbc big tube headers for afr heads

[69restomod]

Hey guys wanting to see what you high hp standard Sbc guys are running for headers, just dropped off the motor to the engine builder for the new afr 210 cnc ported heads ported super victor intake and cam change on my 383 and the exhaust ports are about 1.60 x 1.5 square ports , and I have the Hedmann longtube headers with 1-3/4 primary's but the ports are 1.55 tall by 1.25 measuring side to side with the weld on the inside. And am thinking of tig welding around the outside and porting the inside dimension to match the heads or maybe buying new flanges and welding them on to the headers, or maybe there is a header out there that I don't know about that would fit my 69 c-10 any help would be appreciated!