I went outside and glanced at my Chevy 89mm and the front lever is pointed down. If the lever is up, it might 'reverse' your shift pattern--that is 3rd is right and down and 4th is right and up. I have the stock GM shifter on mine and can email you a picture if you like.
I have an A-833 (the Mopar one) with no shifter, but I took the shifter levers off the side cover and cannot remember which way they go. If the c-4 in my 66 F**d dies, I may try to get enough pieces gathered up to run the A-833 in the F**d. At least I will be going from one odd ball to another
BTW, sharp Corvair. I like the latest ones the best.