INDEX & MATCH 365 Days

Hello

I’ve been looking to do an INDEX & MATCH on the data in “Lead Rates”. It’s a matrix of 365 days. I have 365 rows in column A, but only 256 columns , so I bought the remaining days down into row 374.

Can the two sets of data be combined in an INDEX & MATCH formula?

At the moment all I’ve got is =INDEX('Lead Rates'!5:370,MATCH(Template!D4,'Lead Rates'!A5:A370,0),MATCH(Template!D4,'Lead Rates'!5:5,0))
I need to incorporate cells A374:DG739 into the above formula, so everydate is covered.

Cheers