Header manifolds

It will fit the 170. However the carb mounting plate is missing. You will need that, and for what they are, are fairly expensive (about $79 with shipping if I remember correctly).
Also there is no provision for manifold heat. If you use a stock exhaust manifold you will need to block the exhaust where it exits the top of the exhaust manifold below the intake. Or you will need to modify the Clifford manifold so the exhaust manifold can be fastened to it (like your stock intake/exhaust). If you want to use headers (depending on the year/model vehicle) that can open another can of worms. Most headers will not fit the 170 engine in an early "A" body.
will a 225 exhaust manifold fit the 170 and work out or do you just reccomend putting a plate on top of the hole on the 170's