We picked it up on Monday, put it on on Tuesday.   We had black cooktop for the last 22 years.  Went with stainless steel on this new one.  The black grates really set the stove off.  We just have to get used to the different look.  I put it in myself and was easy to do.  It fit the previous cut out perfectly.  Just got a new gas line and presto, turned it on. Really like how fast the water boils.