1982-'83 RA60 - 21R-C 2.0l engine. Solid axcel, 6.7" diff, older-style front end with tilt-forward headlights
'84 SA63 - 2S-C 2.0l engine. IRS, 6.7" diff, newer style front end with pop-up headlights
'85 RA65 - 22R-E 2.4l engine. IRS, 7.5" diff, same revised front end & taillights as an SA63