Australian Cain weber DCOE manifold probably from the 90s or early 2000s
boses to mount linkage....undrilled
recent redline version here to give you an idea of cost before export and tax and shipping
Chrysler 225 Slant 6 Triple DCOE Weber Manifold
would work well with 3 of these
https://www.speedingparts.co.uk/p/f...uFa_NWegLKBO0umtnh-eLaAeLjv1FbRMaArSLEALw_wcB
i built my linkage for my hemi 6 version using hex bar mounted between rose joints screwed onto studs at the 2 end bosses.
converted my webers to left hand side throttle arms and used the half inch hex bar, Cast offset linkage arms and throttle pull from here.
Steel Hex Cross Bar (specify size)
Just picked my parts from the catalogue rather than take the VW bug kit
i drilled and tapped the bore of the hex bar to allow mounting between the joints. big bolt and lock nuts up each end....
i also used CB performance DCOE filter bases and Tops and their "decent" filters.
basically you have parts there to make up the basis of a very nice induction and exhaust kit for a warmed up slant 6.
that set up with the right cam would allow easy operation at a higher static CR than you would get away with on a unequal length runner distributing manifold.
you could turn an already torquey motor into a right good stump puller
and based on my links above it would not be too expensive to do it.
The chinese carbs have a decent reputation (in this case)
oh and yeah short manifold just use longer ram tubes, long manifold just use shorter, its the tuned length of the lot that counts. you have loads of space on a slant Its not like the carbs will hit the inner fender....
Dave