Fontaine fifth wheels

I currently have a fontaine no slack 2. It has a riser under it on the slider. With tall rubber my current fifth wheel height is 53/54"

I'd like to lower that down a bit. I have a line on a fontaine low profile fifth wheel, slider included.

I want to know if I pull off my whole slider top: will the new one bolt right down?

That is: are the bolts running from slider to frame all the same on this brand?

Hope I'm wording this so it's understandable lol

 

I just got pics...I think it actually has the whole frame mount as well....
$100 all in, hard to go wrong I guess.

 

Kinda what I was thinking...said it got pulled off for a dump conversion and it's been sitting in a barn. This guys clearing it out....

Like I said: for $100 hard to go wrong

 

I wasn't planning on selling my high rise. Case things change in the future..