Header question

[Lippyp]

Any opinions as to whether these will fit my 67 with a 350 in the straight six position? No ide on brand but they are shorty headers swept back in T304 Stainless and are currently at a very good price on ebay here in the UK.

Picture and sellers description

Mouse Motor Racing. Small Block Chevy Headers, in Stainless T304 Tubing. For Auction, No Reserve. Backswept "Shorty" Fast Road/Race exhaust manifolds. Primary chambers are Internal Diameter @1.5" by @1.75" inch = 35mm by 45mm. Collectors are Internal Diameter @2.25" =55mm and have a "Gasketless" re-sealable steel Knuckle for large @3"inch=75mm flared hook-ups. Fits All V8 SBC 283-400CID engines with Straight Plug Heads. Plus these "Shorty`s" are a Direct fitment to Chevy Silverado / Sierra 5.0lt and 5.7lt. 2 H/D Laminated Steel Head Flange Gaskets and 6 collector bolts included. The LASER cut, internal welded head flanges are a massive 0.5" Half an Inch Thick, No Chance of Flexing and leaking hot gas. Left Bank Header has O2 sensor port and blanking plug. See pics actual items. Only a couple in stock, don`t miss out. UK 48Hour Delivery from £19.99. Europe=£44.00. Worldwide=£56.00 Free insurance cover included in shipping costs.