INS-422

I'm thinking of buying and installing one of these in our 150 to do
some CFI-I work.

http://www.valavionics.com/ins_422.htm.

http://www.aircraftspruce.com/catalo.../valins422.php

N10681 has a cessna 300 navcom. I wanting a 2nd VOR, GS, and MB to
allow instrument instruction/proficiency...

Options:

1. add INS 422 non-TSO at $2200
- antenna splitter ant vor1,vor2,GS - $100
- MB antenna $100
- 337 by IA: $100
- Total $2500

2. add INS 422 TSO at $3000
- antenna splitter ant vor1,vor2,GS - $100
- MB antenna $100
- 337 by IA: $100
- Total $3300

3. Install new radio:
- Michel TKM MX300: $1500
- GS reciever: $ 600
- Michel M60 indicator $ 600
- Used audio panel/MB $ 600
- 337 by IA: $ 100
Total $3400

4. Install INS430, sell Cessna 300
- INS 430 from JA Center: $6000
- Indicator for IFR $1400
- Sell Cessna300+ind $-600
- 337 by IA: $ 100
Total $6900

What do you all think?

Mitch