Best circular form factor electronic gyro system

[bryris]

Looking for opinions on the best options to maintain the circular form factor and ditch the vacuum system and go electronic. I have an IFD440 and a TruTrak Vizion. I know the GI-275's and the AV-30's fit the circular holes. Big price difference between the two options, though. I may leave the vac AI in place and replace only the DG just to mitigate costs a bit (my vac DG has never worked well despite fixing everything there is to fix), but I'd want to have HSI ability and a wind vector if possible. I do not want to drill in another GPS antenna. Any way to slave off the IFD440 or split the signal somehow?

 

[msires]

 

[bryris]

 

[GaryT]

 

[msires]

 

[msires]

 

[reb]

 

[reb]