…. and, although it is not the route I would choo
se were I in your shoes, I have a 32PBIC inlet manifold I could sell.
You will have to assemble it to your current exhaust section with a new hotspot gasket and then have the port faces machined to ensure all are flat and parallel. This will ensure a good seal at all ports, and importantly, eliminate the risk of breaking the manifold flanges if they are any height differences between the two sections.
B….