first nitrous motor what rod?

building a new motor and switching to nitrous for the first time, car is a25.2/25.3 cert cage just being finished up, just started to piece somer parts together, plan to be around 598-632 inches, after talking to kaase he made it seem that the cranks are the same price per brand, what i have so far is a set of bare tfs A460 heads that will be set out for porting, and just got my hands on the big V intake from eliminator. i was going to pick up a set of pistons ad some rods but some people i talked to told me to stay with a steel rod and some suggested to go with the aluminum rod, what do you suggest? plan to make about 1150-1200 on motor and probably spray about 350 maybe 450,
motor will be backed by glide and run in the quarter, if i went with a 632 and the suggested rod was 6.700 what size for aluminum? will the drag on the chute hurt anything if left in gear with a steel rod? any help and info would be much appreciated

I am using a 6.8 Oliver steel in a 598 C-head engine. About 125 to 150hp fogger. Does not show any issues.

Stick with a steel rod. I would suggest a 6.8 lenth, but opinions vary i'm sure. With the longer stroke I like the geometry better. Aluminum rods are thicker(and lighter) but they are life-limited, usually at the piston pin end. They also grow much more when engine is at operating temperature. This can be a problem if you are already at a zero deck position. Plan your build accordingly. I'd say good luck, but luck has very little to do with engine building, so........Good skills!