Welcome! Glad to hear another person likes the 6.2L not bcuz the underrated power but the Simplicity & A - B Factors with MPG it has.
I've been on the search for a k5 Diesel about 2 1/2 yrs now, Ofc only a 1982 - 83.
I've got no cash to spend on one now sadly.
At least parts are still pretty plentiful for that newer year 6.2s than my 1982!