Dave, You are doing the right thing by getting involved with the parts acquisition yourself. The previous owner of my VX sat by and watched his insurance company total the rig and all that was damaged was 2 pieces of cladding the rear axle housing and one wheel. The parts were not readily available on the first phone call so it went the way of "REBUILT TITLE". Don't let it happen to you even if you have to tell your repair shop to standby till you get the parts and then sign a waiver with the insurance co. Give these guys a try they did great by me. Good prices and on the ball.
https://www.isuzuparts.com/partscat.html