[2m] Dual Gate Mosfet Transistor Substitution

[Deon Erwin]

I have a Microwave Modules MMA-144 144 MHz preamp and wish to upgrade the
transistors to more modern devices.  The preamp will only be used for VHF
weak signal work.

The preamp employs two 40673 dual gate mosfet transistors and I want to
replace them with the best low-noise, pin compatible, devices available.
I can email the circuit diagram if required.

Can someone advise me?

Thanks
Deon ZR1DQ
.