I've brought this wrecked 87 reg cab for 300 bucks to have as a project truck. It's a good platform with shiney blue paint. Needed a hood cowl panel and driver fenders. I've had a bunch of spare parts laying around for it. I collected over the years. So this would be the perfect truck to put them to use. It needed a hg. So I'm in the process of pulling the block and do a ground up rebuild. I have stock sr5 14in steel rims blasted and painted red that's off an 82. And a good vinyl seat a 21ru engine ready to put in. "I'm not a speed freak."
I find it easier to post pictures if I send it to myself via a text and then download it. It downsizes it enough to upload. This is the only way I have been able to upload without a link to said picture.
When on your phone, go to the picture you want to upload. Hit the edit option. From there you can crop the photo a bit smaller then the original and it will downsize the file.. once cropped, check it by looking at photo info and seeing if it went down to the 2mb/gb size limit this site has.. which honestly.. should be updated now that this site has been around for 2 decades.. that's how I've gone around it.
Here's how I've been uploading photos, hopefully this helps. I'll email them to myself on my phone, then log in to my email on my PC, download them to the PC, then upload to the site from there. If you need more specific info let me know, and i'll do my best to help.
I don't think I've heard of a 21ru or a 21r, I may have to look into them lol seems pretty interesting