Atlas of Pidgin and Creole Language Structures Online
a great many, a great deal
This form does occur in naturalistic spoken "text" but it is marked here as naturalistic written because Cassidy & Le Page (1967: 25), which is the source of my data for the example, only have written sources as illustrative quotations.
Cassidy et al. 1967
Joseph T. Farquharson
Syllable codas: Codas may be complex