No, the 914 case has only one side plate on it, and no way to bolt the axle tubes on anyway. Way easier to weld a set of IRS pivot mounts on, and go that route.
Berg 5 speed would work with T4, there are 200mm T4 conversion flywheels available at a good price. talk to jeffries in japan about the berg 5 speed.
__________________
1970 T1 W/MassIVe 2913cc RAT/?EFI? w/direct fire (very soon) and 915 trans
1962 SC 1776cc SP 944NA brakes, 993 wheels
VKG