Welcome to TBN! :thumbsup:
I have a 2001 model year PT425. I do not know if it is the same length as the current models. I also purchased the metal ramps from Power Track at the time of purchase.
I frequently carried my PT425 with an attachment in the back of my 8' bed on my old Chevy pickup truck. HOWEVER... I removed the tailgate and put a mounting system for the ramps on the truck bumper to make it secure. I welded a piece of steel tubing to the bottom of each ramp and welded another piece of steel tubing to the steel truck bumper. Then I could secure it by sliding a piece of rebar through the pipes and it acted like a giant hinge. Worked great, but not very attractive. Whatever you do, just be sure the ramps are secured to the truck so there is no chance of them slipping off the rear bumper and dropping you to the ground.
I did not trust those little straps that hold the tailgate with my multi-thousand dollar investment, that's why I removed the tailgate. It is easy to do and requires no tools (at least on mine).
I then backed the PT up the ramps and into the bed of the truck. By backing it in, you can keep an attament on the FEL arms. I've hauled the 60" finish mower OR the 48" brush hog, OR the large light material bucket with the small rock bucket with teeth nested in the large bucket and put the pallet forks inside of that. No matter what attachment I had on, I could rest it on the rear of the truck bed and back bumper.