68 dart with 383

Schumacher tri y headers. Ran them with a column shifter and p/s for a year in my 69 valiant with a 383. It now has a floor shifter in it. Driver side goes in from bottom and pass side drops right in.
Thank you for your reply. The only reason I am not considering those headers is because they are impossible to get. I called them earlier and then won't even be back in stock for another 5 weeks.