that looks like a 60hd like i have sittin out in the yard...it has hd cast into it, but buy no means am i saying its worth that...i think i got mine for iirc $38 or 48 (scrap price) and the perches were already set for a k5/10....+ it had 16 brand new lugnuts that cost something like 2.49 each...i knew the guy who scrapped the truck after he rolled it...he pulled engine/trans/t-case & the front end and scrapped it, i went and got the rear b/c i had a 14bsf..i ran the open 4.10 d60hd about 3 days, it sucked w/1 tire pulling, so i put my 14bsf w/gov-bomb back in it. and the d60hd has sat unused for 12 yrs now...it has a brand new pinion yoke that cost me, again iirc @$80 from dana spicer b/c the 1 on it didn't fit my d-shaft