PEX is actually rather flexible. I have run multiple 3.0L 5 cylinders with only PEX for fuel line and no hose clamps. The only place it can not be done is one fitting off of the lift pump it is smooth and it does not seal well. I use 1/4 inch for the fuel line I purchased 100 feet 5 years ago for $30 from a plumbing store. My 2006 CDI uses it with a 70 psi fuel pump.

The trick is to just add a little heat sometimes I use a Phillips head to widen it and then it slides on and shrink wraps itself to the fitting. I use Push-lock fittings. I use flare fittings and push locks so that it will last, and I can remove it. If you need to make a tight corner a little heat and then let it cool and it stays in that position. Remember if you make to tight a corner with rubber hose it will kink also.

I would not pay $150 for 50 feet of Goodyear hose. Try the Pex if you can not get it to work you wasted $10 and an hour of work but it is going to work well.