Digital Gauges

[Bentnine]

I have a Yamaha Multifuncional Digital Gauge Speedometer & Tach set which is shot Hooked up to a 2001 115 TXR 4Stroke. Speedo has 6 Pigtail wires the Tach 10 What replacement models are direct plug in the existing harness? ( Want to keep it simple quick & easy Would it be a big deal to switch these gauges over to anologs?

[boats.net]

It uses 6Y5-8350T-82-00 tach and 6Y5-83570-S5-00 speedo.