I let my freind drive mine ('71 in signature) and we found a stang at the street races. We went and he (us) missed second and probably took the motor to 8k rpm. I really got to step up from the hei and get a rev limited ign. The long rods probably saved it. And we popped the stang on the hiway with 3 people in mine.
If you take your 65 for many road trips youll want a 200 r4. These cars love O.D. , the engines can pull along at 80 like theyre not even on. Mine in 6th gear hurts my right foot because the gas has to be barely feathered. Enjoy that 65, I wish mine was that light.