My spring compressor doesn't seem to fit on the outside.

I don't see how they can fit on the inside after removing the shocks.
Does anyone have a specific model they use?
Will these fit?

I have already pulled and cleaned/painted the rear springs and seats. My outside style spring compressor made it pretty easy to do. After they were out and cleaned and painted, I compressed them on the bench just enough to get them back in and used 3 industrial grade tie wraps (rated for over 300lbs each) evenly spaced around the spring to keep them partially compressed. After installed, I used a floor jack to lift the rear axle enough to slightly recompress the springs, then I cut the tie wraps and it went like a charm. They stayed in the seats, no scratched up paint.
The front has me stymied, I need to remove them to replace the upper and lower control arms (brand new ones waiting).