I have just realised that Weiand make another intake, the Action Plus (8124), which is a low-rise manifold like the Edelbrock Performer (2121). It is a more modern design than the Performer and it is apparently more efficient, according to Holley.
The rear heights of the two intakes are the same at 4.75 inches.
The only difference is that the front height of the Weiand 8124 is 0.32 inches taller
(3.82 compared to 3.50).
Does anybody know of someone using this intake on a Tiger, under a fully closed stock hood with a suitable air cleaner/filter?
The front dimension is only 0.32 inches more, but it could break the whole deal with the Tiger’s sloping hood!