My 89 5.0 Very Build

A 95mm meter may be tough to fit tubing on, before you spend any money calibrating it make sure you have a plan to mount and plumb it. If this was an all out build i'd say do whatever it takes to make it work, but since you are using gt40 parts i'd do what's best to make it work spending the least possible, which may be to sell the meter and buy one already calibrated that bolts in.
Anderson power pipes are hundreds of dollars and i'm not so sure this setup would justify the cost.

Your on the right track, with a maf that large the low flow resolution will be grainy that may cause idle and low rpm cruise issues.. but you will have plenty of room to grow in the future.

jdemolet said:

I just ordered an Anderson power pipe

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They are nice. I initially ordered a BBK cai before ordering my MAF. Once I ordered the 80mm pro-m I found out how large it is and ordered the power pipe. Nice quality piece.

jdemolet said:

Update got a new maf from pmas 80mm for 24lb injectors. I received my bbk regulator and fuel rails in as well motor is in and running real well just have some fine tunning to do and it will be ready for the dyno and ready to run the track again

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Post your numbers when it's done. Always like seeing graphs