Attended the Antique Auto Mushers Fur Rondezvous Car show this past weekend and decided I needed a block heater for attending next year and participating in the parade as well (this year it was minus 15F and some of the guys and gals drove open top vehicles

) Which also reminds me I need to get my heater painted and installed, too.
Anyway I bought a Kat's 600W core plug heater and got it installed today. The same heater should fit any stovebolt 6 cyl engine.