I''ll do the job for $1500.
You can do it for around $500.
Go to www.Ronco-Plastics.com to find your tank.
The Raritan Cricket has done me well for 2 years and was about $150. I bought the best hoses for around $100.
It was not an easy installlation, but it was around $5oo and is doing fine in it''s second year.
I did not do a through hull for wash water. Experiments showed me that added almost a half gallon to each flush. I simply rinse with cup of water after each flush and it seems to work well.
I have not had any solids go into my tank yet, so that may be a factor.
In my first year I could detect odor after pumpout, but tht has gone away.