Are the transmission flanges on a huber 1450 all the same for #6 driveshafts, And how can you tell difference between plug in and driveshaft models visually? Does the plug in style not have a flange?

The plug in style does not have a flange (and it is not possible to convert styles either way), a tailstock that plug into the transom assembly is bolted directly to the transmission.

The drive-line style can accept any number of output flanges and yokes.

New 6's come with a Spicer 1480 series flange, it is about 6" OD, early 6's and 3,4& 5's use a 1350 series, about 5" OD.

DId this help?

I think that the flange on #6 packages has the hole patterns for both 1480 and 1410. If you bolt up a 1410 you install a 1/4" thick adapter plate to adapt the change in pilot diameters.

Thanks, that helps alot.

send the trannys back too huber and upgrade them to 1550s no such thing as too strong in this biz tom is great and they will come back on time and ready to drop in ,i,m not sure why but they shift better than the 1450s also