How do you know if you need a Brazil manifold or Saginaw shuttle valves?

"86 boat with Trs. The existing steering cylinder has 2 steel lines coming out from it on the right hand side.

my 83 Scarab III had a saginaw..

I have a brand new one if interested ......m

I think I need 2 Saginaw valves?

http://www.hardin-marine.com/Instructions/Saginaw.pdf
http://www.hardin-marine.com/Instruc...Brazillian.pdf

on a Bravo setup there is only one valve and there is a tie bar .....

If its old enough to have a TRS on it it is definetley a Saginaw valve.

Thanks guys