Shift rods are too short? 3ott swap

[CousinTone]

I swapped my 3ott tranny in my 68 GMC LB Fleet, and while I knew I'd need to make drive shaft adjustment...the shift rods come up short. Any ideas here? I thought they would be approximately same size since shift plate is in same place, but guess I'm wrong. Any ideas about what rods to look for? Are those adjustable ones in the catalogs worth a look? Looking in Classifieds here I'd need to know exactly what will work and I'm not as knowledgable as most of y'all. I'm not worried about originality, I need drive ability. Ideas, suggestions greatly appreciated.