will a standard cat fit an aftermarket 421 manifold

  1. #1
    This has probaly been asked before, basicaly it's mot time soon and i have an aftermarket 421 manifold unsure of make but was wondering if a stardard cat will fit or do i need to put the standard manifold back on? thanks for any comment's.
  2. #2
    i dont see why it would fit matey, give it a try!
  3. #3
    awesome need to purchase new cat, it's a 2001 y reg vts will it need an underfloor cat as i'm not quite sure?
  4. #4
    May aswell fit a underfloor one mate, save's taking the manifold off for mot's.

    I haven't done this yet - so not 100% if lambda's are long enough.. But it's only a case of adding some extra cable to make them longer.

  5. #5
    were all vts cats underneath?
  6. #6
    I think so - just have big ugly standard manifolds that look like they have a cat in them lol.
  7. #7
    ive got an underfloor cat if you want it! pm me