From what I've read F15's were a slightly updated E70 underpinnings. Unfortunately I was using a screw type OTC 7294 but after wasting 4 hours cranking those things I ordered this and have it waiting for me for the next spring job. They make a 3ton as well but its only like $20 cheaper but that was available on prime. This was delivered directly in like 4days.
https://www.vevor.com/strut-spring-compressor-c_10324/vevor-strut-spring-compressor-4-5-ton-9920-lbs-hydraulic-jack-capacity-1-ton-rated-compression-force-auto-strut-coil-spring-compressor-tool-hydraulic-spring-compressor-for-strut-spring-removing-p_010965229806