The manifold fits to following engines

Engines
Volvo GM V8 small block 305 - 350 cu. in. Models AQ and BB 200, 205, 211, 231, 225, 260, 271, 290, 311, 500, 501, 570, 571 and 572.
Risers
HGE 5384 3¾"(95mm) exhaust outlet, 30° down angle riser.
Mounting Kit (included in the package)
Kit No. HGE5804MK
Content Qty
HGE0000 - Manifold Gasket 1
HGE35908 - Riser Gasket (open) 1
Bolt 3/8" 16UNC x 5-1/8"
+ Lock Washer
6
6
Steel Plug 3/4" NPT 2
Steel Plug 1/2" NPT 1