Yup, sheet styrene is the easiest way to go. Look up the alternator bracket for the model year on Google for an image and draw the pattern onto the sheet, then cut it out, paint it, and mount it to the block.
Yeah, I saw that one too, not sure what size it is either, and it still looks "happy". G-scale stuff is the right size for 1:24 and 1:25 as I've bought a few things in that scale before to add to my models. Thanks for the assist!
Speaking of animals, I would kill for a decent police german shepherd or rottweiler that would scale to 1:24 or 1:25 and fit inside a station wagon or truck. All the ones I've seen look like they are all happy, tongues rolling out, etc..., and not fierce crime-busting canines.
I just read his FB page. Looks like after a messy divorce his business went downhill fast. Dang. His work is really good as well. Wow. Unless someone else here is making them, looks like you'll have to watch fleaBay for awhile to see if another one pops up.