Upon further cogitation of your predicament, I would ask you to examine your overall strategy and reasons for buying a diesel truck. This is a semi-hard core truck camper forum. The truck is more than half of that equation. If you are young and cash strapped, but very good with tools and car stuff, I would council buying an older gas truck and camper together. I would call this the entry-level TC. You will learn the great lessons of TC-dum from that rig. If the diesel truck is your only objective here, then you are on the wrong forum.
2020 Ford F-350 XLT FX4 4WD SRW SB SC 7.3L Godzilla Gas TorqShift 10R140 397 amps dual Alt dual batts Frnt Dana 60; Rr Dana M275 E-locker 4.30's 4580/4320/4066# payload 7243# curb wt. 11,300# GVWR 5-er prepped. 2020 Northstar Laredo SC, 12v compressor fridge, cassette, 320w Solar sub zero insulation.